Calling the EventDelete method leads to a NullPointerException. The program terminates. Possible error source: Objects.requireNonNull(getEvent(id)).delete(); Event class -> delete method How to create it: Launching the CommandLine app and login. Create one Event and select the delete Event after in the terminal. After entering the data to delete the created event it will through the the error NullPointerException. How to solve: Rewrite the delete method without .requireNull
Done!